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3rdGen Heating & Cooling vs Patterson Plumbing And Drain
Alameda Plumbing Contractors Comparison · Updated March 2026
You're comparing an HVAC specialist to a plumbing contractor, but Patterson's missing workers compensation creates liability risk regardless of their 20-year track record.
| 3rdGen Heating & Cooling | Patterson Plumbing And Drain | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.8 |
| Years Licensed | 4 years | 20 years |
| License # | 1086898 | 869970 |
| Workers' Comp | ✓ Yes | — |
| Bond Amount | $25,000 | $25,000 |
| Location | Berkeley, CA | Fremont, CA |
| Website | 3rdgen.io | pattersonplumbingpro.com |
Key Differences
What Customers Say
3rdGen Heating & Cooling
Customers consistently highlight 3rdGen's meticulous installation work and clean job sites, along with the owner's educational approach to explaining HVAC systems and options.
Patterson Plumbing And Drain
Patterson's feedback emphasizes extraordinarily fast response times, including weekend and holiday availability, with customers appreciating clear problem diagnosis before work begins.
Key Takeaway: Both companies receive similar praise for responsiveness and owner communication, but 3rdGen's feedback focuses more on installation craftsmanship while Patterson's emphasizes emergency response speed and diagnostic thoroughness.
Customer Reviews
3rdGen Heating & Cooling
Love 3rd Gen, Devin and the team! They are knowledgeable, professional, kind, and generous. Highly recommend working with them!
I am so glad that I found 3rd Gen Heating & Cooling. The team is smaller so it felt so much more intentional and trustworthy. They pay such great attention to detail, in which they were able to meet m...
I got my HVAC system installed by 3rd gen in 2022, this week the heater stopped working . I gave them a call and Devin and Ceaser visited today to fix the issue. They were at the house right at the ap...
Patterson Plumbing And Drain
We had a toilet clogging emergency that we couldn't fix with a plunger. I found Patterson Plumbing on Nextdoor as recommended by a few follks. Very prompt in responding to my request and resolved the ...
Ivan fixed a toilet flush issue and performed a full drain clean out on 2 separate service calls. He's responsive, knowledgeable, and experienced - which results in correctly diagnosing and remedying...
We replaced the garbage disposal unit. Ivan explained the issue well and his quote is reasonable. Quickly fixed. In addition, he is a really nice person to talk to. Would recommend.
Consider 3rdGen Heating & Cooling if...
- ✓ You need HVAC work—furnace repair, AC installation, heat pump replacement, or mini-split installation—which is 3rdGen's entire focus
- ✓ You want full workers compensation coverage to protect yourself from liability if someone is injured during the project
- ✓ You're installing modern heating technology like heat pumps or mini-splits and want a contractor with demonstrated expertise in these specific systems
- ✓ You value meticulous installation work and worksite cleanliness, which customers consistently mention in their feedback
Consider Patterson Plumbing And Drain if...
- ✓ You need plumbing work—drain clearing, water heater replacement, fixture installation, or leak repair—which is Patterson's specialty
- ✓ You're comfortable accepting the liability risk of no workers comp coverage or have confirmed your homeowner's policy provides adequate protection
- ✓ You have an older home with potentially complicated plumbing issues where Patterson's 20 years of diagnostic experience becomes valuable
- ✓ You need emergency plumbing service and appreciate Patterson's track record of same-day and holiday availability
Questions to Ask Before Hiring
- → For Patterson: Ask directly about liability insurance coverage and confirm with your homeowner's insurance whether you're protected if a contractor without workers comp is injured on your property
- → For Patterson: Given the 20-year history, ask for references from projects in homes similar to yours in age and plumbing configuration
- → For 3rdGen: If considering heat pump or mini-split installation, ask how many of these specific systems they've installed and whether they can provide references from similar projects
- → For both: Confirm their availability for your timeline and ask about warranty coverage on both labor and equipment
The Bottom Line
Your decision should start with what you actually need fixed. If it's HVAC work, choose 3rdGen—they specialize in heating and cooling systems, carry full insurance protection, and receive strong feedback on installation quality. If it's plumbing work, Patterson has the relevant expertise and 20 years of problem-solving experience, but you must address the workers comp gap before hiring. Call your homeowner's insurance agent this week to understand your liability exposure if you hire an uninsured contractor. If your policy doesn't provide adequate coverage or you're uncomfortable with the risk, find a different plumber who carries workers comp. Don't let emergency urgency override this protection.
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Frequently Asked Questions
Every service call carries injury risk, whether it's a simple faucet replacement or complex work. Without workers comp, your homeowner's insurance becomes the primary coverage if someone is hurt on your property. This can lead to claims against your policy, potential rate increases, and legal complications. The complexity of the project doesn't eliminate the liability exposure.
Experience matters significantly for diagnosing complex problems and handling complications, especially in older Bay Area homes with aging infrastructure. However, experience doesn't eliminate injury risk—accidents happen even to veteran contractors. You need to weigh Patterson's diagnostic expertise against the financial and legal liability you're accepting. For straightforward plumbing work, the insurance gap may be the deciding factor.
While some HVAC contractors handle water heaters, 3rdGen's described work focuses on heating and cooling systems rather than plumbing connections. For water heater replacement, you'd likely need a plumbing specialist like Patterson or should ask 3rdGen directly if this falls within their scope. Tank water heaters are primarily plumbing projects, while heat pump water heaters might fall into HVAC territory.
Same-day availability typically reflects scheduling flexibility and responsiveness rather than rushed workmanship. Both companies receive feedback specifically praising thoroughness, clear explanations, and quality work alongside their quick response times. The ability to arrive quickly for an emergency doesn't mean the actual repair or installation is hurried—it means they prioritize urgent customer needs.
Looking for the Best?
See our ranked list of top plumbing contractors in Alameda.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 12, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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